Under the iTunes in the Cloud section, click Manage Devices. (If you haven't associated any devices with your Apple ID, you won't see the Manage Devices section.) Information about each associated device appears. Next to each device, you can see when it associated with your Apple ID.
The real reason why the burp smells so badly is hydrogen sulfide (H2S). If you eat foods that have sulfur proteins in them then you may find yourself burping the H2S, which will smell like rotten eggs. The sulfur reducing microbes in the intestine digest the proteins and release the gas.
DEAR READER: Occasional burping usually results when foods produce gas during the digestive process and that gas escapes through your mouth. But if youâre burping frequently, it is almost certainly the result of swallowing air. Many people swallow air when they breathe or speak without even realizing it. You can probably reduce your belching by making lifestyle changes to decrease the amount of air you swallow.